Plus square fill

<svg class="bi bi-plus-square-fill" width="1em" height="1em" viewBox="0 0 16 16" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
  <path fill-rule="evenodd" d="M2 0a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2H2zm6.5 4a.5.5 0 0 0-1 0v3.5H4a.5.5 0 0 0 0 1h3.5V12a.5.5 0 0 0 1 0V8.5H12a.5.5 0 0 0 0-1H8.5V4z"/>
</svg>